Limits on the number of flavours in grand unified theories from higher-order corrections to fermion masses

作者: D.V. Nanopoulos , D.A. Ross

DOI: 10.1016/0550-3213(79)90507-8

关键词: QuarkGauge theoryParticle physicsColor chargeFermionOperator (physics)Unified ModelRenormalizationUnified field theoryPhysics

摘要: We calculate the complete two-loop corrections to matrix elements of fermion mass operator in a general gauge theory. Application SU(5) grand unified model shows that higher-order tend increase quark masses relative results lowest-order calculation. Thus consistency between theory and experiment demands at most six flavours.

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